440K-B04026
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Overview of Allen Bradley 440K-B04026
The Allen Bradley 440K-B04026 is a Guardmaster Centurion Tongue Interlock Switch designed specifically for safety applications in industrial environments. It features a time-delay function that prevents access to machinery immediately after power is switched off, ensuring safe operation and maintenance procedures. Manufactured with a durable metal housing and rated IP66 for protection against dust and water, this switch fits seamlessly into guarding systems. The unit includes 2 normally closed safety contacts and 1 normally open auxiliary contact, offering reliable break-before-make switching for secure power isolation. It operates effectively within a temperature range of -25°C to +80°C and handles up to 600V AC/DC, making it a versatile solution for diverse industrial safety needs.
Key Features of Allen Bradley 440K-B04026
- Timed delay bolt prevents guard opening for 15-20 seconds after power off
- 2 Normally Closed (NC) safety contacts and 1 Normally Open (NO) auxiliary contact
- Break-before-make contact configuration for enhanced safety
- Durable metal housing with IP66 ingress protection rating
- Supports maximum voltage of 600V AC/DC and current up to 6A
- Manual thumb wheel actuator to withdraw interlock shaft safely
- Compact dimensions: 64mm length, 40.5mm width, and 98mm depth
- Suitable for use in harsh industrial environments, temperature range from -25°C to +80°C
- Conforms to multiple safety standards including EN 1088 and IEC 60947-5-1
Technical Specs of 440K-B04026
| Specification | Details |
|---|---|
| Model | 440K-B04026 |
| Type | Guardmaster Centurion Tongue Interlock Switch |
| Contacts | 2 NC Safety + 1 NO Auxiliary |
| Contact Type | Break Before Make |
| Actuator | Included, manual thumb wheel |
| Connection | M20 Conduit |
| Housing Material | Die-Cast Metal Alloy |
| Ingress Protection | IP66 |
| Operating Temperature | -25°C to +80°C |
| Maximum Voltage | 600V AC/DC |
| Maximum Current | 6A |
| Dimensions (L x W x D) | 64mm x 40.5mm x 98mm |
| Standards Compliance | EN 1088, EN 292, EN 60947-5-1, EN 60204-1 |
Applications / Use Case
The Allen Bradley 440K-B04026 is ideal for safeguarding machinery in manufacturing plants, assembly lines, and automation systems where operator safety is critical. Its timed delay function prevents premature access, protecting personnel from hazardous machine movements after shutdown. This interlock switch suits sliding, hinged, or lift-off guards and is commonly deployed in industries such as automotive, packaging, and heavy equipment production. It integrates into safety control circuits to meet stringent safety standards and provides reliable fail-safe isolation of machinery power. The metal construction and high ingress protection rating make it appropriate for harsh environments involving dust, moisture, or washdown processes.
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